Bicycle



FIG. 1 is a perspective view of a bicycle showing my new design.

FIG. 2 is a side view thereof;

FIG. 3 is an opposite view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front thereof; and,

FIG. 7 is a rear view thereof.

The broken lines illustrate portions of the bicycle that forms no part of the claimed design. 

CLAIM The ornamental design for a bicycle, as shown and described. 